NEW YORK – A massive heat dome fueling the first major heat wave of the summer brought record-breaking temperatures to cities across the Northeast on Monday, and the life-threatening conditions will continue on Tuesday as millions of people from the Midwest to New England fight to stay cool.

As temperatures skyrocketed across the region, many cities experienced heat that hadn’t been seen in a century, breaking long-standing records.

HOW TO WATCH FOX WEATHER

New York City tied its record of 96 degrees set back in 1888, with other records being broken in Massachusetts, Pennsylvania and West Virginia.

Worcester, Massachusetts, reached 92 degrees on Monday, breaking its old record of 89 degrees set in 1894.

The temperature reached 97 degrees in Glens Falls, New York, on Monday, breaking its record of 95 degrees set in 1894.

Newark International Airport reached the triple digits Monday afternoon, officially hitting 101 degrees. Meanwhile, Philadelphia marked its hottest day since July 2022, with a high of 99 degrees.

DOWNLOAD THE FREE FOX WEATHER APP

And it’s one thing to say it’s going to be hot, but when you see the effects of what heat can do, it really puts the situation into perspective.

It was so hot in Cape Girardeau, Missouri, on Sunday that roads began to buckle. The dramatic video shared by Albert Blackwell shows the moment the roadway snapped, sending a car flying through the air and slamming back onto the ground.

7 THINGS TO KNOW ABOUT SUNSCREEN

The extreme heat has also led to issues with travel. Amtrak implemented train speed restrictions on Monday from Washington to Boston due to the high temperatures.

FOX 5 DC reported an Amtrak train was evacuated after becoming stuck in a tunnel near Baltimore, which was forecast to experience a feels-like temperature of 112 degrees on Monday. Passengers told FOX 5 they were stuck on the train for over an hour without air conditioning or electricity.

FOX Weather has reached out to Amtrak to verify this information.

FIRESTARTER: LEAVING YOUR WATER BOTTLE IN THE SUNLIGHT CAN HAVE DISASTROUS RESULTS

The heat is also causing issues in Washington, impacting people trying to visit parks and monuments in the area.

The National Park Service said that the Washington Monument would be closed Monday and Tuesday due to the extreme heat conditions.

WHAT IS A HEAT DOME?

Record-breaking heat continues Tuesday

This graphic shows heat alerts in effect through Wednesday, June 25, 2025.

(FOX Weather)

More than 228 million people across the eastern half of the U.S. will experience temperatures higher than 90 degrees on Tuesday, with many locations even approaching or rising above 100 degrees.

And it’s not just the high temperatures making people feel miserable. Humidity is soaring, with dew points rising into the 70s.

Extreme Heat Warnings – the most dire heat alert issued by the National Weather Service – now stretch from the South Carolina-North Carolina border in the mid-Atlantic and continue up the Interstate 95 corridor through Wilmington and Raleigh in North Carolina, Richmond in Virginia, Washington, Baltimore, Philadelphia, New York City, New Haven in Connecticut, Providence in Rhode Island and Boston.

Extreme Heat Warnings are also in effect to the west, including in cities like Detroit and Pittsburgh.

WHAT IS AN URBAN HEAT ISLAND?

This graphic shows potenrial records in jeopardy on Tuesday, June 24, 2025.

(FOX Weather)

Dozens of record-high temperatures are in jeopardy of being broken on Tuesday from the Southeast to Maine in northern New England.

Cities like New York City, Newark in New Jersey, Baltimore, Philadelphia and Washington are all expected to flirt with or rise above 100 degrees on Tuesday, threatening records in those cities.